F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
F16J 15/16 (2006.01) F16J 15/447 (2006.01)
Patent
CA 2571503
An isolator seal comprises a stator member (17) for location into the stator of rotating equipment and a rotor member (14) for location onto a rotary shaft of the rotating equipment. These two members provide respective adjacent surfaces (82/83) and a static shut-off device (81) engages both adjacent surfaces when the rotor member is static and disengages one or more of said surfaces when the rotor member is dynamic. In one aspect of the present invention at least one of said surfaces is inclined to the longitudinal axis at an angle greater or less than 90~. In a further aspect of the present invention the static shut-off device comprises a resilient annular sealing member (354) and an auxiliary member (357), movable between a first position, when the rotor member is static, at which said auxiliary member compresses said resilient annular member into engagement with both said surfaces, and a second position at which the compression on said resilient member is reduced, whereby the resilient annular member disengages one or more of said rotor and stator surfaces when the-rotor is dynamic.
L'invention concerne un joint isolant comprenant un élément (17) stator destiné à être placé dans le stator d'un appareil rotatif, et un élément (14) rotor destiné à être placé sur l'arbre rotatif de l'appareil rotatif. Ces deux éléments comportent des surfaces (82/83) adjacentes, et un dispositif (81) d'isolement statique entre en contact avec les deux surfaces adjacentes lorsque la élément rotor est statique, et libère au moins une desdites surfaces lorsque l'élément rotor est dynamique. Selon un aspect de l'invention, au moins une desdites surfaces est inclinée à un angle supérieur ou inférieure à 90° par rapport à l'axe longitudinal. Selon un autre aspect de l'invention, le dispositif d'isolement statique comprend un élément (354) d'étanchéité annulaire souple et un élément (357) auxiliaire pouvant se déplacer entre une première position, correspondant à l'état statique de l'élément rotor, et dans laquelle l'élément auxiliaire comprime ledit élément annulaire résilient de manière à le faire entrer en contact avec les deux surfaces, et une seconde position dans laquelle la compression dudit élément résilient est réduite, de manière à séparer l'élément annulaire souple de la surface du rotor et/ou de la surface du stator lorsque le rotor est dynamique.
Colverson Andrew
Roddis Alan James
Aes Engineering Limited
Ridout & Maybee Llp
LandOfFree
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